Hfos - Study guides, Class notes & Summaries
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ASE AC 609 Question and answers 2023
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ASE AC 609 Question and answers 2023Ozone Depletion Potential - correct answers chemical rating that ranges from 0.01-1.0 and that refers to the amount of ozone depletion caused by a substance compared to CFC-11 (eg HCFC-22 depletes .034 of the ozone where CFC-11 would deplete 1.0) 
 
class 1 substance - correct answers ozone depleting chemical with an ozone depletion potential greater than .2 (eg CFCs)HCFCs - correct answers Hydrochlorofluorocarbons, eg R-22 (HCFC-22) 
 
HFCs - correct...
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(Answered) EPA SECTION 608 CORE (2021-2022 revision)
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EPA SECTION 608 CORE (2021-2022 revision) 
A disposable cylinder should be reduced to what pressure before scrapping? 
a. 0 psig 
b. 20 psig 
c. 50 psig 
d. 80 psig 
 
A major system repair is being performed on a R-22 appliance. What CANNOT be done to recharge the appliance? 
a. Add R-22 after the repair is complete. 
b. Retrofit the unit to R-407C. 
c. Use recovered or recycled R-22 from the same 
owner. 
d. Top off the unit with R-410a. 
A refillable cylinder must not be filled above what ...
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EPA SECTION 608 CORE (2019 revision) Questions and Answers Latest Version 100% Solved
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EPA SECTION 608 CORE (2019 revision) 
Questions and Answers Latest Version 
100% Solved 
What does ozone in the stratosphere above the earth consist of? 
a. Molecules containing 2 oxygen atoms. 
b. Molecules containing 3 oxygen atoms. 
c. Molecules containing 4 oxygen atoms. 
d. Molecules containing 5 oxygen atoms ️️b. Molecules containing 3 oxygen atoms. 
Which of the following refrigerants has the lowest global warming potential? 
a. R-134a 
b. R-407C 
c. R-410A 
d. R-600a ️️d. R-600a...
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EPA 608 Exam Test Questions With Revised Correct Answers BEST UPDATED COMBINED SET!!
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EPA 608 Exam Test Questions With 
Revised Correct Answers 
BEST UPDATED COMBINED SET!! 
The molecule found in CFCs and HCFCs that depletes ozone is - 
ANSWER 
Chlorine 
A single chlorine atom can destroy how many ozone molecules - ANSWER 100,000 
Silicone elastomers, for use in seals and gaskets, are not 
compatible with which refrigerants - ANSWER 
HFOs 
Reusable refrigerant containers under high-pressure must be 
hydrostatically tested how often - ANSWER 
5 years ...
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EPA 608 – Core Exam Study Questions and Answers 100% Solved 2024 Graded A
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What does ozone in the stratosphere above the earth consist of? 
 
a. Molecules containing 2 oxygen atoms 
b. Molecules containing 3 oxygen atoms 
c. Molecules containing 4 oxygen atoms 
d. Molecules containing 5 oxygen atoms - b. Molecules containing 3 oxygen atoms 
 
Which of the following refrigerants has the lowest global warming potential? 
 
a. R-134a 
b. R-407C 
c. R-410A 
d. R-600a - d. R-600a 
 
Which of the following gases is used as the baseline measurement for global warming potentia...
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EPA 608 CORE EXAM TESTS COMBINED | VERIFIED TEST QUESTIONS WITH CORRECT SOLUTIONS
- Exam (elaborations) • 102 pages • 2023
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EPA 608 CORE EXAM TESTS 
COMBINED | VERIFIED TEST 
QUESTIONS WITH CORRECT 
SOLUTIONS 
Where is the stratosphere? - ANSWER 10 to 30 miles 
Where is ozone located? - ANSWER stratosphere 
What does ozone in the stratosphere above the earth consist of? 
a. Molecules containing 2 oxygen atoms 
b. Molecules containing 3 oxygen atoms 
c. Molecules containing 4 oxygen atoms 
d. Molecules containing 5 oxygen atoms - ANSWER b. Molecules 
containing 3 oxygen atoms 
Which of the following refrigerants ha...
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EPA 608 - Type III Correct Questions & Answers!!
- Exam (elaborations) • 16 pages • 2023
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technicians maintaining, servicing, repairing, or disposing of low-pressure appliances must be certified as: - ANSWER Type III or Universal Technician 
 
the owner &/or operator of the equipment is responsible for keeping: - ANSWER records including: leak inspections & any completed leak repair verification tests 
 
it's the _______ &/or ___________ responsibility to obtain service records from the servicing company doing any work on an appliancem - ANSWER owner &/ or operator 
 
as of 11/14/94...
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EPA 608: CORE with 100% correct answers already graded A+
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What is the Ozone Layer? 
 
What is the difference between ozone in the stratosphere and on the ground level? 
Ozone in the stratosphere between 7 and 28 miles above earth. 
 
On the ground level ozone is a harmful pollutant, in the stratosphere it is a protective shield. 
 
 
 
What is ODP? 
Ozone Depletion Potential 
 
It is the ability of a substance to destroy ozone in the stratosphere 
 
 
 
What is GWP? 
Global Warming Potential. 
 
The GWP of a refrigerant is its global warming impact rel...
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EPA 608 CORE EXAM TESTS COMBINED | VERIFIED TEST QUESTIONS WITH CORRECT SOLUTIONS
- Exam (elaborations) • 102 pages • 2023
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EPA 608 CORE EXAM TESTS 
COMBINED | VERIFIED TEST 
QUESTIONS WITH CORRECT 
SOLUTIONS 
Where is the stratosphere? - ANSWER 10 to 30 miles 
Where is ozone located? - ANSWER stratosphere 
What does ozone in the stratosphere above the earth consist of? 
a. Molecules containing 2 oxygen atoms 
b. Molecules containing 3 oxygen atoms 
c. Molecules containing 4 oxygen atoms 
d. Molecules containing 5 oxygen atoms - ANSWER b. Molecules 
containing 3 oxygen atoms 
Which of the following refrigerants ha...
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EPA SECTION 608 CORE EXAM 2023 WITH 100% CORRECT ANSWERS
- Exam (elaborations) • 28 pages • 2023
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What does ozone in the stratosphere above the earth consist of? 
a. Molecules containing 2 oxygen atoms. 
b. Molecules containing 3 oxygen atoms. 
c. Molecules containing 4 oxygen atoms. 
d. Molecules containing 5 oxygen atoms - correct answerb. Molecules containing 3 oxygen atoms. 
 
Which of the following refrigerants has the lowest global warming potential? 
a. R-134a 
b. R-407C 
c. R-410A 
d. R-600a - correct answerd. R-600a 
 
Which of the following gases is used as the baseline 
measuremen...
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